[1] Mason's Yard is a square or cul-de-sac on the east side of Duke Street in the St James's area of London in the City of Westminster.

Jimi Hendrix performed here on the night of his arrival in England on 24 September 1966 and met Kathy Etchingham, who became his girlfriend.

[7] The Matthiesen Gallery, a leading dealership in Italian French and Spanish old master pictures, occupied No.6 dorm from 1978–1980, during which time they were involved in the development of the adjoining site, Nos 7–8, which was vacant.

The resulting building was the first purpose built specialised private art gallery since WWII and was the location of numerous exhibitions from 1981 to 2009.

[8] The Paisnel Gallery was previously located at 22 Mason's Yard, moving here from Fulham Road in the early 1990s.